Dumping apparatus



Furio MAY 31. 1.921.

INVM/TOR.

772 Swim my y ATTORNEYJ,

Jan. 30, E923.

R, M. MALONE. DUMP NG APPARATUS 2 SHEETS-SHEET 2 F l LED MAY 3l 1921 l w ,R S i b.

INI/ENTOR. 977. WM

ff BYMWMM A TTORNEY.

Patented Jan. 30, 1923.

UNITED STATES RAYMOND M. MALONE, OF MILWUKEEfWISCONSIN.

DUMPING APPARATUS.

, Application tiled May 31, 1921. Serial No. 473,840.

y To all whom t may concern:

Ati@

` Be it known that I, RAYMOND M. MALoNu, a citizen of the United States, residing at Milwaukee in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Dumping Apparatus, of which the following is a speciiication, reference bein had to the accompanying drawing, formmg a part thereof.

This invention relates to dumping apparatus for the bodies of motor trucks and the like and the object of the invention is to improve the construction and operation -of dumping apparatus in the manner to be hereinafter described and claimed.

Referring to the drawings, which accompany this specification and form a part hereof, which drawings illustrate an embodiment of this invention, and on which drawings the same reference characters are employed to designate the same parts wherever they may appear in the several views, Fig. 1 is an elevation of part of a motor truck, parts being shown :as brokgen away and parts being shown in section; Fig. 2 is a plan view of parts of the motor truck; Fig. 3 is a plan view, with partsV broken away and parts shown in section, of the engine and associated mechanism; Fig. 4 is a vertical section, taken on the-line 4--4 on Fig. 3, looking in the direction indicated by the arrows; and Fig. 5 is an elevation of details of construction. Figs.` 3, 4 and 5 of the drawings are drawn to a larger scale than Figs. 1 and 2.

Referring to the drawings, the reference numeral 1 designates the chassis which is provided with the engine 2, the gear box 3, and the propeller shaft 4 for driving the wheels 5. The body 6 is pivotally supported by the chassis near its rear end inV any suitable or referred manner as, for example, by a pin 7 which passes through the brackets 8 and 9, one of which is secured to the chassis 1 while the other is secured to the body 6. Y It is preferred to have a pair of brackets 8 and 9 and a pin 7 at each side of the tru'ck. The forward or front end of the body 6 may rest upon any suitable support 10,1 when the body 6 is in a substantially horizontal position.

transverse shaft 11` is su ported by the chassis 1 and is provided witi'i cranks 12 secured near the ends thereof and these cranks are connected with links 13 which incline upwardly and forward when the body is 1n its lowermost position. Each link 13 is illustrated as composed of a pair of members which embrace a crank 12 and which are connected by lost motion connections with the body 6. In the `specific construc-tion illustrated, lugs 14 are securedto the' body 6 and are provided with pins 15 which pass into or through slots 16 in the members ofeach link 13. It will be clear from the foregoing description that the body 6 can be raised by rotating the transverse shaft 11. Gear se ents 17 are secured to the transverse s aft 11 and mesh with pinions 18 secured to a shaft 19. A large gear 20 is secured to the shaft 19 and meshes with a inion 21 which is secured Vto ashaft 22. T e'shaft 22 also has a worm wheel 23 secured thereto with which a suitably supported worm 24 meshes. The shafts 19 and 22'are journaled in supports 25 and 26 which are supported by the shaft 11 at their rear ends and by the transverse member 27 at their front ends. rThe journal bearings 28 and 29 for the transverse shaft 11 may be secured to the side bars of the chassis frame so that the dumping apparatus can be readily assembled with any construction of motor truck.

The engine 2 is illustrated as a common type of internal combustion engine which turns over only in one direction and from which power is supplied by a clutch (not shown) to a clutch shaft 30. The gear box 3 may contain any of the common types of gear mechanism for securing changes of speed and reversal of direction of motion of the motor truck and this mechanism requires lno description in this specification other than to say that the gear 31 is Secured to the clutch shaft and meshes with a gear 32 secured to a lay shaft 33. With such a construction, when the engine is turning over or running, the gears 31 and 32 will kbe rotated and their direction of rotation will never be reversed. l attach a secondary gear box 34 to the truck, preferably by fastening it to the gear box 3, which has been prvided with an aperture 35 so that the gear 36 can mesh with-.the gear 32. The gear 36 is suitably supported by the secondary gear box 34 in any manner so that it can rotate but be kept constantly in mesh iet i with the gear32. rlhe drawings show the gear 36 as rotatably supported upon a nonvrotatable stud 37. A shaft 38 is rotatably mounted in the secondarygear box 34 and a double slidable gear 39 is splined thereto or otherwise suitably connected therewith to rotate the shaft 38 while being tree to be moved longitudinally thereon. The doubleslidable gear 39 hasa large gear part 40, a smaller gear part 41, and a circumferential groove 42 for a shifting fork 43. A reversing; gear 44 is loosely supported upon va stud 45, which is immovably fixed in the shifting fork 43 by a movement of the shifting rod 48 will move simultaneously the double slidable gear 39 and the reversing gear 44. The arrangement and proportion of parts is such that either the large gear part 40 of the double slidable gear 39 or the reversing gear 44 can be brought into mesh with the gear 36 by movements of the shifting rod 48-and the extent of movement requiredto effect this shift of gears is great enough to entirely disengage the large gear part 4Q from the gear 36 before the reversing gear 44 can be engaged with gear 36 or vice versa, so that the double slidable gear 39 (and the reversing gear 44) can be moved to a neutral or inoperative position,

as clearly shown by Fig. 3 of the drawings. The shaft 38 is connected with the worm 24 in any suitable manner'as, for example, by a shaft 49 and universal couplings 5() and 51.

The shifting rod 48 is moved automatically tomove the large' gear part 40 of the double slidable gear 39 or the reversing gear 44 out of mesh from the gear 36 by a crank arm 52 which is loosely supported on the transverse shaft 11 and which is connected with the shifting rod 48 by a rod 53, bell-crank lever 54 and a4 link 55. The crank arm 52 is provided with a hub 56 which has a part recessed to provide twoA shoulders 57 and 58 for a projection 59 to contact with to rotate the crank arm 52 and move the shifting rod 48 to disengage either the large gear part 40 or the reversing gear 44` from the gear 36 to stop further movement of the body 6. The projection 59 may be formed on a collar 60 which may be secured to the transverse shaft 11 by a set screw 61. The angular distance between the shoulders 57 and 58 should be the same as the required angular rotation of the transverse shaft 11 plusthe angle subtended by the projection 59. After the crank arm 52 has been moved by the projection 59 to move the shifting fork 43 and the gears 40, 41 and 44 into inoperative positions with respect to the gear 36, as hereinbefore de# scribed, the body 6 can be moved in the opposite direction by pulling up or pushing downhas the case may be, on the handle 62 which -is connected to the bell-crank vlever 54. -This will be obvious from an inspection of Fig. 5 of the drawings which lshows the parts in the positions occupied after the projection 59 has contacted with the shoulder 57 and moved the lower end of the crank arm 52 to the right which has brought the slidable gear 39, and the reversing gear 44, into the inoperative or stop positions. lt is obvious that the crank arm 52 may be moved still further .to the right without i encountering resistance. It is also obvious that, when the transverse shaft 11 has been rotated to such an extent that the projection 59 has contacted with the shoulder 58 and moved the crank arm 52 to the left to stop the further rotation of the transverse shaft 11, the crank arm 52 can be moved to the left without encountering resistance. In l other words, the function of the projection 59 is to move the shifting rod 48 in such a direction that the large gear part 40 will be moved away from the gear 36 and the reversing gear 44 will be moved towards the gear 36, or vice versa, and the functoin of the handle 62 isto complete the extent of movement required, when desired, to move the body 6 in the direction opposite to the direction in whi/ch itmoved last.

The lost motion connections between the links 13 and the body 6 are important features of construction andthe extent of movement permitted'by this construction should be suiiicient to enable the pinions 18 to run out of mesh with the teeth of the gear' segments 17 when the gear segments are being turned in either direction. This construction'prevents serious damage in case the projection 59, for example, should be broken oi so that the movement of the body 6 would not be automatically stopped as it will be seen from an inspection of Fig. 1 of the drawings that a continued rotation of the pinion 18 in a clock-wise direction will simply rotate the gear segment 17 out of mesh, lthe support or stop 10 holding the body 6 in a fixed position while the link 13 moves down on the pin 15 and the pinion 18 can continue to rotate indefinitely without any damage being done. '1f the pinion 18 is being-rotated counter-clock-wise, the projection 59 being broken ofi' for example, the gear segment 17 will be run out of mesh with thepinion 18 and the adjustable, screw stop. 63 will engage under the support 26 to prevent liturther rotation of the gear segbe reengaged with-the pinion 18 by pulling the body 6 down or rotating the transverse shaft 11 in any convenient manner while. in

' the former case the rotation of the Shaft 11 only the gear segment 17 and the pinion 18 shown by Fig. 1 of the drawings have been referred to for convenience'of explanation, it will be understood 'that both gear seg# ments 17 can run out of mesh with their respective pinions 1.8. The use of two gear segments 17 and two pinions 18 located near opposite sides of the truck. is to prevent.

f twisting strains-being set up when the body and bejarred each time 6 is being elevated.

The lost motion connections between the body Gand the elevating `mechanism also permits the body 6to be moved and jarred to dislodge material which may tend to stick to it. If the rear of the body 6.projects some distance rearwardly of the pin 7, the material sliding 'from the body will tip the front end of the body up and the'pins 15 will be stopped suddenly by contacting with the upper ends of the slots 16, thus jarring the body 6, or the body can be swung back and forth as far as permitted by the slots 16 the pins contact with the ends of the slots.

The operation of the apparatus will be readily understood from the foregoing descriptlon. By manipulation of the handle 62 either the gear 4:() or the reversing gear 44 can be engaged or meshed with the gear 36 and the'body 6 can be raised or lowered. The raising or lowering of the body 6 will be automatically stopped by the crank arm 52 and, if not stopped the pinions 18 will with said pinion,

simply run the segment gears 17 out of mesh so that parts will not be broken. v

The apparatus as a whole can be assembled with any truck and by describing and illustrating specific constructions I do not intend to limit my invention to the precise construction and arrangement of parts shown asthe specific constructions fand arrangements can be varied more or less.

The gear segments 17 and their pinions 18 can be enclosed or protected by any suit? able orv preferred guards or casings (not shown) and the gear 20 and its pinion 21 can be likewise enclosed or protected by a guard or casing` (not shown) to prevent small stones or other material from being caught between the gears and the pinions.

What is claimed is:

The combination with a motor truck provided with a tiltable body, a non-reversible engine and means for reversing the direction of motion of the motor truck, of separate reversible mechanism, a pinion adapted to be rotated by the separate reversible mechanism, ay gear segment adapted to mesh with said pinion and to be run out of mesh therewith, means for tilting the truck body by movements of said gear Segment, a stop for arresting further movement of said gear segment after it has been run out of mesh manually operable means for controlling the operationof said separate reversible mechanism, mechanical means for controlling the operation of said Separate reversible mechanism, land a connection between the said manually operable means and the mechanical means.

In witness whereof I hereto aiix my signature. v RAYMOND M. MALONE. 

